{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x79cfe1efd934520a0591dcb9485467769ab21cdd2d2b8f3e401240bf3fc8324f",
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    "signer": "0x5402C4b9d190Bb11bA99Ef659Ff5E2eB4E6a6552",
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}